Brinn’s rectangular kitchen has An area of 81 ft.². The kitchen is nine times as many square feet as Brinn’s pantry. If the rectanglular pantry is 3 feet wide, what is the length of the pantry?

The ages of personnel in the accounting department of a large company are normally distributed with a standard deviation of 7 years. there is a 0.02275 probability that the age of any randomly chosen person in the department is less than 22 and 0.15866 probabilty that the age of any randomly chosen person is greater than 43. what is the mean of this distribution?